A man first exposed by The Post for collecting huge sums of money on behalf of slain cops’ families – and giving them almost none of it – was busted yesterday by the feds on fraud charges.

Justin White was charged with running a phony charity called the Police Survivors Fund – which paid out only 5 percent of the money gathered by his pushy telemarketers.

White, 65, was released on $250,000 bond in Manhattan federal court.

The feds say he collected more than $440,000 since late 1999, but paid out only $14,500 to the families of officers killed in the line of duty.

After Sept. 11, his telemarketers allegedly changed their sales pitch to include lines like: “a lot of people who feel very strongly about what happened . . . are donating $911 to commemorate the day of terrorism,” prosecutors charge.

White served five years of probation in the 1980s for trying to defraud small businesses by selling them ads in a phony police newspaper.

The Post published an exposé of White and other questionable fund-raisers last June, even before his “charity” got a boost in contributions from the terror attacks.

Officials say he collected nearly $180,000 in the three months after the attacks. In all that time, he issued just one check – for $10,000 to the family of an officer killed at the Twin Towers.

“Justin White lined his pockets with donations from well-meaning people who opened their hearts and their wallets to assist the families of slain police officers,” said FBI Assistant Director Kevin Donovan.